U1MB dead after firmware update to SIDE2 cart

[rkindig]

I updated the U1MB in my 800XL to 3.1 with no problem.  Then... I tried updating the firmware on my SIDE2 cart to 3.1 as well and now the machine seems bricked.  Screen comes up but stays at blue screen.

 

I think I might have updated the U1MB firmware with the SIDE2 image.

 

How can I fix this?

 

thanks.

 

Randy

[flashjazzcat]

 

[Mark loves Stella]

On 6/6/2020 at 11:16 PM, rkindig said:

I updated the U1MB in my 800XL to 3.1 with no problem.  Then... I tried updating the firmware on my SIDE2 cart to 3.1 as well and now the machine seems bricked.  Screen comes up but stays at blue screen.

 

I think I might have updated the U1MB firmware with the SIDE2 image.

 

How can I fix this?

 

thanks.

 

Randy

I did the same thing some time ago. I bought a TL866 EPROM programmer and reflashed the chip. If you send me the EPROM chip, I can flash it and test on my U1MB and return to you. PM me if you need any help.

[rkindig]

On 6/8/2020 at 10:02 PM, Mark loves Stella said:

I did the same thing some time ago. I bought a TL866 EPROM programmer and reflashed the chip. If you send me the EPROM chip, I can flash it and test on my U1MB and return to you. PM me if you need any help.

Thank you for the offer!  Much appreciated.  I contacted FlashJazzCat and he's sending me a properly programmed chip.  Terrific guy!